3 years ago

The product of 6 and the total of z and 9

Mathematics

1 answer:

tatiyna3 years ago

7 0

Answer:

6(z+9)

ANSWER: 6z+54

z=9

Step-by-step explanation:

mm, im sorry they didn't answer this yesterday

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2 years ago

A car traveling east at a constant rate of 33 mi/hr passes through an intersection at 10 A.M. A truck traveling north at a const

Rufina [12.5K]

Answer:52.33 m/s

Step-by-step explanation:

Given

Speed of car $v_1=33 mi/hr$

Speed of truck $v_2=42 mi/hr$

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Therefore after 11 am distance of car and truck from Junction in time t is

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truck $=42 t$

Let D be the distance between them

$D^2=42t^2+(33+33t)^2$ ------------1

at $t= 2 hr$

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To get how fast distance between them is increasing differentiate 1 we get

$2D\frac{\mathrm{d} D}{\mathrm{d} t}=2\cdot(42)^2t+2\cdot 33^2(1+t)$

$\frac{\mathrm{d} D}{\mathrm{d} t}=\frac{42^2t+33^2\left ( 1+t\right )}{D}$

$\frac{\mathrm{d} D}{\mathrm{d} t}=\frac{1764\times 2+1089\times 3}{D}$

$\frac{\mathrm{d} D}{\mathrm{d} t}=\frac{6795}{129.83}=52.33 m/s$

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4 years ago

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Determine whether 2y=3x-1 represents a direct variation. if it does, find the constant of variation.

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Answer choices for this question?

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3 years ago

Y=1/3x-4 + Y=-7/3x+4

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Answer:

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Step-by-step explanation:

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the 13 flip is independent of the 12 flips before it

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